This Genuine Tohatsu Marine Part is a piston ring set with the part number 3C1-87123-0. It is designed specifically for Tohatsu outboard motors and is made with high-quality materials to ensure optimal performance and durability. This piston ring set is a genuine Tohatsu part, meaning it is manufactured to the highest standards and is guaranteed to fit and function properly in your Tohatsu outboard motor. Whether you are performing routine maintenance or making repairs, this piston ring set is an essential component for keeping your Tohatsu outboard motor running smoothly.